Which one among the following statements with respect to the atomic nu

Which one among the following statements with respect to the atomic number of an atom is correct ?

The number of neutrons is same as atomic number
The sum of electrons and neutrons is same as atomic number
The number of protons is same as atomic number
The sum of protons and neutrons is same as atomic number
This question was previously asked in
UPSC CAPF – 2024
The correct option is C. The atomic number of an atom is defined as the number of protons in the nucleus of that atom.
– Atomic number (Z) is a fundamental property of an element that uniquely identifies it.
– It represents the number of positive charges (protons) in the nucleus.
– In a neutral atom, the number of electrons is equal to the number of protons.
The mass number (A) of an atom is the sum of the number of protons and neutrons in the nucleus. Isotopes of an element have the same atomic number (same number of protons) but different mass numbers (different numbers of neutrons).
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